acquire an indefeasible right to be appointed which cannot be legitimately denied. Ordinarily, the notification merely amounts to an invitation to qualified candidates to apply for recruitment and on their selection they do not acquire any right to the post. Unless the relevant recruitment rules so indicate, the State is under no legal duty to fill up all or any of the vacancies. However, it does not mean that the State has the licence of acting in an arbitrary manner. The decision not to fill up the vacancies has to be taken bonafide for appropriate reasons. And if the vacancies or any of them are filled up, the State is bound to respect the comparative merit of the candidates, as reflected at the recruitment test, and no discrimination can be permitted. This correct position has been consistently followed by this Court, and we do not find any discordant note in the decisions in State of Haryana Vs. Subhash Chander Marwaha and Others, [1974] 1SCR 165; Miss Neelima Shangla Vs. Stae of Haryana and Others, [1986] 4 SCC 268 and Jitendra Kumar and Others Vs. State of Punjab and Others, [1985] 1 SCR 899. "